package com.xuenci.gulimall.order.config;/*
 *@author:xec
 *@date:2022/6/1  22:15
 */

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

@Configuration
public class GuliFeignConfig {

    @Bean("requestInterceptor")
    public RequestInterceptor requestInterceptor(){
         return new RequestInterceptor(){
            @Override
            public void apply(RequestTemplate requestTemplate) {
                // 1、RequestContextHolder拿到刚进来的这个请求
                ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
                if (attributes!=null){
                    HttpServletRequest request = attributes.getRequest();    // 老请求
                    if (request!=null){
                        // System.out.println("feign远程之前先进性RequestInterceptor.apply方法");
                        // 同步请求头数据，Cookie
                        String header = request.getHeader("Cookie");
                        // 给新请求同步了老请求的cookie
                        requestTemplate.header("Cookie",header);
                    }
                }
            }
        };
    }
}
